Forget the blood of teens. This pill promises to extend life for a nickel a pop

Barzilai’s big plan isn’t necessarily less quixotic than those being dreamed up at Silicon Valley biotechs. It’s just quixotic in a completely different way. Rather than trying to develop a wildly expensive, highly speculative therapy that will likely only benefit the billionaire-demigod set, Barzilai wants to convince the FDA to put its seal of approval on an antiaging drug for the rest of us: A cheap, generic, demonstrably safe pharmaceutical that has already shown, in a host of preliminary studies, that it may be able to help stave off many of the worst parts of growing old.